Calculating machine



March 11, 1941. A. J. FETTIG 2,234,669

' cucuu'rme IACHINE Filed Nov. 23. 1936 5 Sheets-Sheet 1.

mvsmon flrT/zur J. F'eUZg ATTORNEYS M 1941- A. J. FETTIG 2,234,669

CALCULATING IAUHINE Filed Nov. 23. 1936 5 Sheets-Sheet 2 Fig.2.

lNVENTOR ATTORNEYS March 11,'1941..- A. J. FETTIG' CALCULATING IACHINE F1106 Nov. 23, 1936 5 Sheets-Sheet 3 nnnnnnnnnn 5 IIIIIHIli M7 INVENTOR I I BY flnffiur J Fe/fl'g ATTORNEY$ March 11, 1941. A. J. FETTIG CALCULATING IACHINE Filed Nov. 23, 1936 5 Sheets-Sheet 4 INVENTOR flrfizur J. f e/7g ATTORNEYS March 11, 1941c. A. .1. FETTIG CALCULATING MACHINE Filed Nov. 23, 1936 5 Sheets-Sheet 5 INVENTOR flrThur J #27719 W M ATTORNEYS Patented Mar. 11, 1941 UNITED STATES PATENT orrics CALCULATING monmn Arthur J. Fettig, Detroit, Mich" assignor to Bur roughs Adding Machine Company, Detroit,

Mich, a corporation of Michigan Application November 2:, 1936, Serial No. 112,197

. 19 Claims. This invention relates to a calculatingmachine, more particularly a multiple register ma-.

It is also an object of this invention to pro-' vide an improved register selecting mechanism which automatically maintains a predetermined relation between register selection and columnar printing.

Other and more particular objects of the invention will appear fromthe following specification and drawings which describe and illustrate one embodiment of this invention, and in which Figure 1 is a right side elevation of a multiple register machine embodying the features of this invention and in which certain parts are cut away to more clearly illustrate the invention.

Fig. 2 is a right side elevation of a portion of the machine illustrating a rotary multiple register and certain portions of the register selecting mechanism therefor, the latter mechanism being in normal or inactive position.

Fig. 3 is a left side elevation of the portion of the machine illustrated in Fig. 2.

Fig. 4 is a right side elevation similar to Fig. 2 and illustrating the register selecting mechanism in the operative state.

Fig. 5 is a perspective view of a portion of the rotary register and associated mechanisms looking from the right side of the machine.

Fig. 6 is a front elevation of the mechanisms for moving the registers laterally out of the magazine and illustrating one register removed from the magazine.

Fig. 7 isa fragmentary perspective view of'a portion of the escapement and tabulating mech- Fig. 8 is a partial front elevation of the col detail of a portion of Fig. 1 illusdrive has operated to cause carriage tabulation.

The invention is shown applied to a Burroughs calculating machine of the type known as a Burroughs-Moon-Hopkins Machine. The general features of .this machineare shown in Hopkins patent, No. 1,336,904, and in numerous other patents covering improvements which have been made from time to time. Only such features of the machine will be described herein as are necessary for an understanding of the present invention. It is understood that, while the invention is shown as applied to a particular machine, it can also be used with other types of calculating machines.

General machine features The machine illustrated is a combined typewriter and calculating machine of the ten key type and has ten amount keys I (Fig. 1), each of which operates a lever 2 to raise its index bar 3 when the key is depressed. Bars 3 index pins 4 (Fig. 6), in a traveling pin carriage 5 that is controlled by an escapement mechanism and is released one step each time a key is depressed, as shownand described in the heretofore mentioned Hopkins patent, or similar to that shown in the Thieme Patent No. 1,143,240. After an item has been indexed in the pin carriage, the machine is given a cycle of operation by hand or by motor I (Fig. l) set into operation by a motor bar 8 which causes the pin carriage 5 to be raised to index corresponding pins in a stationary field of stop pins 9 (Fig. 6). These latter pins arrest the actuator racks l0, carried by arms ll (Fig. 1) in differential positions. The actuator racks carry movable types l2 on their front ends and, after the racks have been diflerentially positioned, a printing mechanism is automatically operated to print the amount indexed by the racks upon paper supported by a platen P carried by a traveling paper carriage C. The actuator racks also engage and rotate register pinions as will be later described. v

The keys and their connections form what may be termedamount determining devices, and the sets of index pins form indexing mechanisms. The amount determining devices together with the indexing mechanisms and the actuator racks form what may be called an amount determining differential mechanism.

Means is provided for controlling the columnar printing, that is, for causing different amounts I or calculations to be printed in different columns on the paper, which in the illustrated embodiment is accomplished by controlling the traveling paper carriage. This carriage C is spring urged from column to column across the machine in tabulating direction under the control of a tabulating mechanism, portions of which are shown in Figs. 7, 8, and 9. The mechanism may be the same as that described in detail in the Thieme Patent No. 1,2 59,929 or in the Thieme Patent No. 1,027,225. 'ihe traveling paper carrlagemay be automatically returned across the machine'by acarrlage return mechanism such as disclosed in the Thieme Patent No. 1,120,862.

A rear or main register is adapted to cooperate with the actuator racks it. This register is carried by a rockable frame which may be moved at predeteermined times during cycles of operation of the machine to engage and disengage the register and the racks. 1"he rear register and rocking frame have not been shown in detail but are described in the Hopkinspatent and in the Tieme Patent No. 1,321,260, to which reference is made for a disclosure of these mech:

anisms.

The machine is also provided with multiple registers 21 which are movable into and out of a drum type magazine 28 and may be caused to engage and disengage the racks. These latter mechanisms have not been shown but are shown 4 and described in the Muller Patent No. 1,920,477.

Suitable tens-transfer mechanisms are provided for each register. These mechanisms have not been illustrated in detail but are disclosed in several of the heretofore mentioned patents.

The multiple register magazine as is rotatably mounted at the side of the group of actuator racks l 0. The magazine is normally spring urged clockwise and may be indexed in a manner similar to that shown and described in the Muller patent to bring the desired register to indexedor selected position after which the register is removed laterally from the magazine to the front register frame where it is in position for cooperation with the actuator racks. This frame is rocked to engage and disengage the register with the racks to perform the various calculating taper-'- ations possible on the, machine, all as described in the Muller patent.

The mounting of the multiple registers and the mechanisms for removing them from and returning them to the magazine are described in detail in the Muller Patent No. 1,920,477. Portions of these mechanisms have been illustrated herein, but no attempt will be made to describe them in detail. The manner in which the registors are combined with and are controlled by the rest of the mechanism will be later described.

The present trend and commercial practice require that machines of this type operate as quickly as possible and be absolutely error-proof. In a machine of the type illustrated in Muller Patent No. 1,920,477, wherein the carriage'carries stops to positioned to engage peso-by pewls' iil for causing indexing of the multiple register magazine, it is sometimes desired to rotate the The present invention provides ior positive and accurate register selection in accordance with, or synchronized with, the position of the paper carriage regardless of the distance the carriage is tabulated or the speed at which it tabulates. In other words, the present invention insures that the proper number of escapements of the magazine will take place during any tabulating movement of the paper carriage, when the paper carriage is skip-tabulated or when several escapements of the register magazine are necessary for one columnar shift of the paper carriage. In skip-tabulating dlmculties may occurbecause after the initial inertia of the carriage in starting has been overcome the carriage travels very rapidly through the second and later columnar positions and may not consume sufficient time to permit complete escapement of the register magazine. When several register magazine escapements are necessary for one columnar tabulation it is apparent that sumcient time for several scapements oi the register v magazine may not be available.

Multiple register selecting As in the Muller patent, the paper carriage is provided with the required number of register selectingdogs 25 each of which carries a passby pawl 28 positioned to engage the rollers 21 of an escapement wheel 28 (Fig. 5). Escapement wheel 20 is Journaled on a stud it, carried by arm 80, pivoted about a horizontal pivot 30 (Fig. 3). Wheel 20 is formed with a bevel gear 31 which meshes with a bevel gear 82, fast on a shaft 33 which extends to the right side of the machine where it carries a gear 80. Gear 0d meshes with an idle gear 35 which in turn engages a larger gear 38, journaled on a stud 87, and having secured thereto an inner ratchet 30 engaged by a pawl 39 (Figs. 2, 4 ends) pivoted at 00 and spring urged counter-clockwise. Pawl 00 permits only counter-clockwise rotation of gear 86 and ratchet 80. An outer larger ratchet ii is also secured as a unit to gear 80 and ratchet 80 and is engaged by pawl 62, spring urged clock-- wise and having a nose d8 engaging the'teeth of ratchet 0i. arm 00, also journaled' on stud 07. vArm as is urged clockwise about stud ill by a spring (is (Fig. 2) until a projecting finger ll of arm it engages a stud dc.

From the construction thus far described it will be seen. that, as pass-by pawl 20 travels to the left in tabulating movements oi the carriage. it will engage a roller 21 and rotate wheel 28 and ear 39 clockwise. This will cause counter clockwise rotation of pinion 80 and counterclockwise rotation 01 gear it and ratchets 08 and 08.

This movement of gear 8% and its associated ratchets mrmits escapement of the register magazine which is normally urged clockwise by a spring as disclosed in the Muller patent. The escapement mechanism is very similar to that disclosedin the Muller patent, but is slightly diflerent and the differences will, therefore, be described. J

The normal position of the mrts just described is with-the nose 60 of pawl d2 engaged in between two teeth of the ratchet 01. As the gear 00 and the two ratchet wheels 38 and 58 are rotated in unison by engagement of. pass-by pawl 86 with a roller 21 of wheelie during carriage tabulation, pawl 00 will engage successive teeth of ratchet'88 and prevent reverse rotation of the latter. During this movement of ratchet M, arm

Pawl 32 is pivoted at 550 on on 44 will be rotated step by step in a. counterclockwise direction because of the engagement of pawl 42 with the outer ratchet 4|. The parts have been so designed as to permit movement of arm 44 to the extent of three teeth on ratchet 4|. This amount of permissible movement can of course be varied to suit particular requirei'nents,v but it has been found that three teeth have been sufllcient for all cases arising to date. In other words this permits of a lag of three steps ofthe register magazine for any given tabulatlng movement of the carriage.

Movement of arm 44 is made use of to permit escapement of the register magazine. For this purpose arm 44 is provided with a stud 50 (Figs. 2 and 4) projecting inwardly in position to engage the cam surface SI of one arm 52 of a lever pivoted at 53 and having a forwardly extending arm 54 engageable with a stud 55 carried by one arm of the register magazine escapement pawl 56 (Fig. 4). This latter pawl is adaptable to teeth 51 in the escapement ratchet of the register magazine in a manner similar to the pawl 82 of the Muller Patent 1,920,477. Accordingly, as

; the arm 44 swings counter-clockwise upon countar-clockwise movement of gear 26, the stud ill will engage the raised or high portion 5| of the cam surface 5| of lever 52 and rock the latter clockwise, and immediately release pawl 56 to permit escapement movement of the magazine 23 in a clockwise direction as shown in Fig. 4.

Pawl 42 is provided with a stud 6|! at its upper end positioned to engage an arcuate arm 8| of lever 62 fixed to shaft 63, to which is also fixed another arm 64 carrying a pivoted pawl 65 upon its outer end."Pawl 85 carries a stud 68 projecting therefrom, which engages lugs 81 of an auxiliary escapement ratchet 68 carried by the magazine, there being a lug 81 for each of the register positions of the magazine. Accordingly, as ratchet 4| and pawl 42 'move counter-clockwise upon carriage movement, stud i rocks lever 52, which in turn rocks and releases escapement pawl 56, thereby freeing the magazine for clockwise rotation under urge of its spring. As the magazine moves, a lug 81 engages tud 55, rocking arms 64 and 62 clockwise whereby arm 6| engages stud 60 and rocks pawl 42. about its pivot until the upper nose 43 thereof engages a tooth of ratchet 4|. This permits pawl 42 and arm 44 to restore clockwise a distance of one-half a tooth.' As lug 61 passes beyond stud Bl, arm 8| moves counter-clockwise away from stud 60 and permits a lower nose 43 of pawl 42 to engage the next tooth of ratchet 4|, thus permitting restoration of pawl 42 and arm 44 a full tooth. If this movement of pawl 42 and arm 44 is sufllcient to lower stud 50 below the high portion I of lever 52, pawl 56 will engage the next tooth 51 of the main escapement ratchet and thereby stop escapemen-t of the magazine. 11, on the other hand, pawl 42 and arm 44 have been advanced three tooth spaces as illustrated in Figure 4, resulting from a rapid or extensive carriage movement before the magazine has had time to follow up, arm 44 and pawl 42 will receive successive movements until stud 50 reaches the lower portion of the cam surface During these successlve restoring movements of pawl 42 and lever 44 and until stud 50 travels on. the high portion 5| of cam surface 5|, magazine 23 is free to escape, that is, during the aforesaid movement of pawl 42 and arm 44 escapemen-t pawl 56 is held away from teeth 51.

Accordingly each time the carriage tabulates.

7 to travel in a clockwise direction until the pawl together with arm 44 restores to normal position and releases pawl 56 to re-engage the next tooth of the magazine ratchet.

If the paper carriage is caused to skip-.tabu' lalte through three columnar positions and a register trip dog is located in each carriage'position, pawl 42 and arm 44 may be moved by the carriage a distance equal to three tooth spaces of the ratchet 4|. However, as the carriage is traveling through these three columns, the magazine 22 is also escaping, with the result that the pawl 42 is-being released to move back to its normal position at approximately the same time that the ratchet 4| is being advanced by the carriage if the columns on the form being used are'of suiiicient width so that as the carriage travels through the various columns there .hand, if the columns on the carriage or form are very narrow and the register trip dogs are spaced close together on the carriage, the ratchet wheel 4| may be advanced several steps or tooth capement of the magazine has had time to take place. Under these conditions, it is conceivable that the puvl 42 and the arm 44 can be advanced faster in a counter-clockwise direction than the escapement of the register magazine can take Place in a clockwise direction. In this event, the pawl 42 will gradually be raised two or three tooth spaces away from its home position while the carriage is skip-tabulating through several columns.

In actual practice, however, this seldom happens, and it has been found that a provision or allowance for a three tooth space rise of pawl 42 and arm 44 is more than necessary to take care of all practical applications. 01 course if the carriage becomes stationary and the register magazine has not caught up with the carriage, it will continue to escape through several register positions, and as each register position is passed, the pawl 42 is released a single tooth space until it finally restores to its normal home with the pawl 42 advanced three tooth spaces ahead of the carraige position. From such a position the arm 44 and the arm 64 would take three movements eaclr in order to permit the magazine to catch up with the carriage and become synchronized threwith; that is, until the pawl 42 returns to normal or home position. Of course the same action would take place if it was desired to skip several register positions between two adjacent columns of the carriage, in which case three or more carriage release dogs would be placed close together within one columnar position of the carriage.-

There has been provided therefore a register selecting means under control of the carriage,

which means in itself comprises an escapement spaces before the ratchet pawl 42 and the .es-

register magazine, and this is true resardlem of [the extent or speed or tabulation movement of the paper carriage.

Interlocks As in the Muller patent heretofore mentioned the register magazine is provided with twenty registers and twenty register positions, and provision is made to prevent the register from rotating beyond its twentieth position. Provision. is also made in the illustrated machine to prevent continued indexing of pawl 62. This is accom= plished by removing the escapement wheel 28 from possible engagement with pass-by pawl 25. For this purpose an arm iii (Fig. 3) is secured to the pivot pin 39 which carries arm as, upon which es'capemen-t wheel 28 is mounted. Arm it is normally urged counter-clockwise by a spring ll and is retained against such movement by a latch crank it, the forward end of which terminates in a hook which engages a stud 99 carried by the upper end of arm '95. Crank it} is pivoted at 86 and its rear end has a slotted connection 8! with the forward end of a crank 82 journaled on stud 83 and being normally urged clockwise by a spring at. Journaled on the same stud as is a three-arm lever 83 yield- -ingly connected to crank 82 by a spring ill, the

relative movement of the lever 58 and crank 62 being limited by a second arm engaging a stud 38 carried by crank 82.

The third arm of the three-arm lever 88 has a square stud as which engages the shoulder of a pivoted lever 95 which latter lever prevents clockwise rotation of the three-arm lever 88 and accordingly prevents clockwise movement oi bell crank as which in turn prevents release of latch ls. When the register magazine reaches its twentieth register position, a stud or carried by the magazine engages lever 8i and rocks the lat ter clockwise, thus permitting clockwise movementof lever 86 and crank it which in tum rotates crank it counter-clockwise. This releases arm l5 and permits spring Tl to rotate the latter arm counter-=clockwise to remove the escapement wheel is out of possible engagement with pass-by pawl 28, and thus prevents any further movement of pawl 32.

Lever at also has a stud and slotconnection- 95 with a link 9d, the other end oi which'is connected to an arm at fast upon a shaft 38. Shaft 98 extends across the rear of the machine to the other side of the magazine, where it carries an arm 99 (Figs. 2 and a) having'a stud and fork connection its to an arm lei. formed integrally with pawl 89.; Movement of lever {it will rock shaft to which in turn will rock arm Hill with pawl as and release the letter from ratchet 8&3 to

- permit return of arm at and pawl 32 if the latter has, through any mismanipulation, beeni'aised.

' This permits restoration of pawl 62 at the same time that register magazine 28 reaches its twen= tieth register position. f

Therefore, if a misoperation occurs by which it is attempted to index the magazine beyond, its capacity of twenty registers, the present inven= tion is disabled by the means shown and dc scribed under control of the stud 9% which causes retraction oi escapement wheel 2? out oi possible engagement with the carriage dose and also disablesthe escapement pawl 38 so that all parts will assume their normal or home 1-1- in preparation for the starting of the new transaction, and reestablishing synchronization of the register with the carriage. Y

assaeeo position, wherethe register indexing means is automatically disabled as above described, the

magasine will be restored counter-clockwise to v its No. l register position by means disclosed in the heretofore mentioned Muller patent, and the stud all will move away from latch or lever at. As the magazine is restored to-its No. l register position the stud after first permitting arm til to move will engage the lower arm of the three-arm lever 88 which carries stud s9 and restore the three-arm lever and the crank 82 to initial positions. Thm moves bell crank it clockwise whichbecause of the end c surface cams the arm l6 clockwise and relatches the latter in position-with the escapement wheel 253 in enagaging relation to the dog Ed.

in order to prevent the arm 66 and pawl d2 tending arm, Mill (Figs. 2 and a) in position to be encased by the stud 50 carried by arm 66 (Fig. i). If the latter moves counter-clockwise beyond the permissible movement of three teeth on .the ratchet 419 stud he will engage arm Hi2 and rock the pawl 89 out of engagement with its ratchet 238-, thus permitting clockwise movement of ratchet 38 one tooth, whereupon the stud 59 will move away from the M32.

Means are also provided to prevent the gear 38, the ratchet 88, the ratchet-fill and the arm to from being than nose by the spring 456 when the pawl is disengaged from the ratchet as. This means comprises an arm toil (Figs. 2 and 4-) iournaled on stud ii'and constantly urged clockwise by a sprlnaitll so as to bring a stud W5 carried by the outer end of the arm into yielding contact between the teeth of the ratchet 8Q.

Column selecting mechanism or carriage tabulatins eontrol 'ent No, l,@37,825,'siightly-modifled to provide ship-damnation. is accomplished by not sin ing the tabulator stops and the upper ends of the tabulator tim that e the stops, whereby de-= pr of certain tat'ing keys would allow the paper carriage to pass all other tabulatlng stops until the one came alongthat matched the ed too-rapidly and farther shape of the notched tabulating stop, which would-stop the carriage in that partioulm coin.

0n theother hand, the invention has men found especially well adapted to a mace as shown and-having the tabulstins or column selootin 1:: m illustrated in Figs. 1, s, and 9. in this type oi traction a series of keys are provided across the front of the carriage and each ikey represents a icular columnar posinew columnar position of the carriage.

. integrally with the carriage.

tion of the carriage, so that when one of the keys is depressed the carriage is first caused to tabulate into the desired column and then, without attention on the part of the operator, the register which has been selected by the carriage dogs automatically moves from the magazine into active relation with the actuators and, finally, as the register moves into position, the register movement causes the motor clutch and drive to be tripped to operate the machine after the selected register is in active position. As the machine completes the stroke of operation, the active register is restored to the magazine. A subsequent depression of another one of the selecting keys repeats the above operation in the It is understood, of course, that the digit keys for entering an amount must be depressed before the column selecting keys are depressed because the complete cycle of operation is entirely automatic after the column selecting key has been depressed. A more detailed explanation of this type of column selecting mechanism and the particular application of this invention thereto will now be given.

The machine is provided with a plurality of tabulating or column selecting keys IIO (Figs. 1, 8 and 9) removably and adjustably carried by a slotted shaft II I extending across the carriage and supported at each end byan arm II2 formed Shaft III is provided with a slot for each letter space position of the paper carriage, which permits adjustment of keys IIO to any letter space position of the carriage and, therefore, according to the positions of the keys H0, the carriage may be tabulated to any desired letter space position. In

order that the keys may be readily removable and replaceable, they are provided upon their lower ends with a hook portion II3 which engages in the slots of shaft III, and are retained upon the shaft by a leaf spring II4 as clearly shown in Fig. 9. The keys are .rockable inwardly and when so rocked a lower foot portion II5 engages a bail H6 extending across the carriage and being pivoted to the end plates of the carriage at H1. The lower portion of the nail is adapted to engage a stud II8 carrledby a slide II5, the lower end of which is pivotally connected to a lever I'(Fig. 1) pivoted on a-shaft I2I. The opposite end of lever I20 is connected to one end of a link I22, the other end of which is connected to a crank I23 pivoted at I24 to the base of the machine. The rear portion of crank I23 carries a stud I25 which engages the switch I25- controlling the motor 1 for closing the switch upon depression of any column selecting stop. The rearend of crank I23 has a slotted connection with one end of a lever. I28 pivoted at I21- and carrying upon its other end a stud I23 which engages a curved arm I23 pivoted to the rear end of a slide I30.

Upon depression of a column selecting stop IIO arm I25 is loweredinto position to be engaged by one of a series of studs I3I carried by a gear I32 driven from the. main motor. Upon closingthe motor switch I25, the motor is caused to rotate, whereupon a stud I3I engages arm I23 and pulls slide I3l-rearwardly.' The forward end of slide I is connected to a crank I33 also pivoted at I24 and rocks the crank counterclockwise. The other arm of crank I33 is connected to one end of a link I34, the other end of which Is connected to a lever I35 fixed to the shaft I2I and extending forwardly to where it is secured to one end of a slide I36, the upper end of which extends through a block I31 and terminates in a tabulator stop I38.

Column selecting key H0, therefore, not only purpose by a spring I40. The stop I38 is permitted to move laterally within the block I31 and, when it is engaged by a key IIO, it moves sufficiently to the left (Fig. 8) to be lowered below the top of block I31 and to disengage latch I39.

'The shock of this engagement is cushioned by the dashpot "I.

In order for the carriage t'o tabulate, the usual escapement mechanism of the carriage must, of course, be released. This escapement mechanism is illustrated briefly in Fig. 7 and comprises generally an escapement ratchet I42 on a shaft I43 which also carries the pinion I44 which engages the carriage rack 4*. A pawl I45 engages the ratchet I42 and is mounted on the end of a link I45 which is actuated by the typewriter keys K (Fig. 1) or space bar B through the universal bail (not shown) in the usual manner to permit a latter space escapement at each typewriter key depression.

Shaft I2I (Fig. 1), which is rocked clockwise upon depression of a key' IIO, carries an additional arm I41 to which is pivotally connected one end of a lever I48 pivoted at I49 and attached at its rear end to a link I50. Accordingly, as shaft I2I is rocked clockwise it raises link will rock crank "I and lower pawl I to release the escapement ratchet I42 and permit the carriage to tabulate. Depression of a column selector key IIII, therefore, also releases the carriage escapement mechanism while it at the same time sets up a tabulating stop. Upon the lowering of the tabulator stop, caused by a tension spring I54 pulling upwardly upon the connection of arm I41 on shaft I2I with link I50, link I50 is also lowered to permit restoration of escapement pawl I45.

As the tabulator stop is restored and the lever I35 on shaft I2I (Fig, 1') is moved counterclockwise to its normal position, a hook I56, pivotally carried by lever I35 engages a stud I51 projecting from lever I20 and rocks the latter counterclockwise to restore the depressed key to normal It is understood that when the magazine 23 1 is being rotated, i. e. while a register is being selected, all of the registers are supp rted within the magazine, as seen in Figure 5. But after the magazine has been indexed and the paper carriage is positioned in a new column, the selected register is automatically moved from the magazine into active relation with the actuators I3, I; seen inFlgure 6. The register is automatically moved by mechanisms very similar to those disclosed in the Muller Patent No. .920,- 477 with certain modifications as will now be described.

A link use (Fig. 1) is connected to the rear end of lever i 38 where it connects with linit ihil and also to the forward end of a crank lei (Figs. 1 and 10) pivoted at 552 and carrying a hook we at its rear end. When the column selecting key is depressed, hook liit (Fig. 10) will be lowered to engage a stud i6 1 projecting from a slide ltd, and upon return of key lit, hook iilti' will raise slide ted to release a latch $86 which, in turn, permits rotation of a threearmed leve" 0671. This lever corresponds in function to the three-armed lever lid of the Muller Patent No. 1336,47? As explained in time patent, lever i8? (H8 in Muller) controls lateral movement of the register to and from its magazine.

With the carriage in its new selected column and the selected register in active relation to the actuators, the machine is automatically conditioned for operation. the described in the Mill ler patent, the three-armed lever i6? is moved clockwise as the register is moved laterally from the magazine, and-this movement causes a stud lit carried by the three-armed lever iii? to engage and lower a slide ill which, in turn, rocks a pawl W2 counterclockwise to engage a stud tilt carried by a clutch lever flll to raise the latter. The raising of clutch lever i'ld releases the clutch and causes the machine to take a single stroke of operation, as disclosed in the lVi'uller patent.

Thus, after the key lit has been depressed, the carriage tabulates to the desired column, during which time, the resistor magazine is in dexed to the selected position and after which the register is automatically moved to active position, and this movement 01 the register finally releases the motor clutch to cause the machine to take a stroke of operation. All of the foregoing takes place as the result of a single depresslon of one of the col selector keys Mil.

During operation of the machine, an arm ilt (Fig. descends and disengaces hook its to permit restoration of the register in the maga= zine at the extreme end of the machine operation, as disclosed in the Muller patent.

As a further insurance that the register magazine will be in step or synohronism with the carriage-that is. to insure that the correct number of register escapementc will take placethe magazine escapement pawl Be is provided with a forwardly extending finger lit (Figure 4) which, when the pawl is in clockwise or released position, occupies a position in front of the register carriage lit, so as to prevent movement of the latter.

Accordingly, a register cot he moved laterally out of the mace, even though latch 566 (Figure 10) has limo released. until the magazine has been fully posltlouw with the proper register in position to be moved to. active position. When this condition exists, pawl 58 will be in its counterclockwise position, and finger i'li will be removed from in front of the register carriage Ill. Theretorc the synchronizing mechanismwill prevent machine operation. even though the carriage has completed its travel, if

thc'proper registef'has not been selected and fioved laterally into active position with the scators.

The foregoing mechanism is also well adapted for vertical posting work in which the carriage remains stationary, and amounts are entered and listed or totals taken and printed in vertical order. In operations of this kind, the digit keys are first depressed to index the amount to be entered, after which the motor bar 8 is depressed. De-

pression of the motor bar moves a wire ltd (Fig-- ure 1) which, in turn, rocks a crank i82 counter= clockwise to raise slide Hi5. This, as previously explained, releases the selected register to move laterally into active position; and after the reg-= i ter has completed its movement laterally, the motor drive is tripped through the link iii.

It will be seen from the foregoing that the clutch is not released either from the motor bar or from the keys, but that the-clutch is operated as the register moves laterally from the magazine into active position. In other words, the op eration of the machine is controlled icy the regis= ter, or more specifically by lateral movement of the register from its magazine. This rnodeoi operation has certain advantages, in that the amount may first be set up on the keyboard and then later, a selection of the register may be made. Furthermore, machine operation is positively prevented until the register has been com pletely moved to its active position with the actuators.

' Power operated result keys The foregoing mechanism is also employed to provide for what is sometimes termed"power operated result lzeys." when in a machine as disclosed in the Muller Patent 1,920,471 a result key, such as a total key is depressed the register automatically moves from the magazine into active relation with the actuator'racks at the proper time. After this movement it is necessary to depress the motor bar to operate the machine. Suhstantially the same mechanism is employed in the present invention in which an arm 68E of bail i186 (Fig. 10) is rocked upon depression of the total key '1 (Fig. l) Bail i236 is provided with a second arm it? which underlies the lower end of slide lot and upon rocking of bail it raises slide 565. This, as previously explained, releases the selected register to move into active position. The parts 8%, its and lei correspond to the parts tit, till and 382 of the Muller Patent 1,- 920,457. In the present machine. as previously explained, movement of the register out of the magazine into active position relatively to the racks trips the motor clutch and initiates an operation of the machine. an actual operation of the machine upon depres- Accordingly, we have sion of a result key without the necessity of depressing the motor bar.

It will be apparent from the foregoing that the principal features of this invention may be applied to machines of other types than the one described and that minor changes may be made in a the details of construction without departing item the spirit and scope of the invention as defined in the appended claims.

Iclaim: 1. A'calculatlng machine having a traveling paper carriage, a register support, a plurality of registers on said-support, and means under control of said paper carriage for indexing said reglster support as said carriage is moved from column to column," said means comprising an escapement mechanism conditioneclby said-carriaze. during movement thereof and operable while said carriage is stationary to complete indexing of said register support.

3. A calculating machine having columnarprinting control means, a register magazine, a

/ plurality of registers in said magazine, said registers being removable irom said magazine into active position, an escapement mechanism for indexing said magazine to select a predetermined register in accordance with the position oi said columnar printing control means, means controlled by. said escapement mechanism for moving said registers to and from said magazine, and means controlled by said last-mentioned means for preventing operation of said machine until said selected register is removed from said magazine and is in active position.

4. A calculating machine having a traveling paper carriage, a register support, a plurality of registers on said support, a detent for said .support, a pair of ratchets, means carried by said carriage for rotating said ratchets, a pair of pawls engaging said ratchets. and means associated with one of said pawls for controlling said detent. r

5. A calculating machine having a traveling paper'carriage, a register support, a plurality of registers on said support, a detent for said support, a -pair.of ratchets, means carried by said carriage for rotating said ratchets, a pair of pawls engaging said ratchets, and means associated with one of said pawls for controlling said detent, one or said pawls being movable both' with and relatively to its associated ratchet.

6. A calculating machine having atraveling paper carriage, a register support, a plurality of registers on said support, register selecting means controlled by said carriage for initiating indexing of said support as saidcarriage moves from column to column to select a predetermined register in accordance with the position of said carriage, said means being operable to complete indexing of said magazine while said carriage is stationary, and means for preventing continued operation of said means aitersaid support has been indexed to its capacity.

'7. ii calculating machine having columnarprlnting control means, column selecting keys for controlling saidcolumnar-printing control means. a register support, a plurality of registers on said support, register selecting means controlled by an element of said columnar-printing control means for initiating indexing oi said support to select a predetermined register in accordance with the position of said columnar printing means, said means being operable 'independently of columnar movement of said columnar-printing control means to complete indexing of said magazine, and means controlled 7' by said column selecting keys for preventing operationoisaidmachine until said support has beenindezed= 8.Acalculating machine having printing control means, column selecting keys for controlling said columnar printing means, a register magazine, a plurality of registers in said magazine, said registers being removable from said magazine into active position, means controlled by an element of said. columnar-printing control means for indexing said magazine to select a predetermined register, means controlled by said keys for moving said selected register to and irom said magazine, and means for preventing operation of said machine until said selected register is removed from said magazine and is in active position.

9. In a calculating machine, power means for giving said machine cycles 0! operation, connec-v tions comprising a clutch for operatively connecting said power means to said machine, columnar-printing control means, column selecting keys for controlling said columnar-printing con-- trol means, a register magazine, a plurality of --registers in said magazine, register selecting means controlled by an element of said columnarprinting control means for indexing said magazine as said columnar-printing control-means is conditioned for printing in different columns to select a predetermined register in accordance with columnar printing, and means controlled by said keys for preventing engagement of said clutch until said magazine has been indexed.

10. In a calculating machine, power means for giving said machine cycles oi operation, connections comprising a clutch for operatively connecting said power means to said machine, a traveling paper carriage, column selecting keys for controlling tabulating movements of said carriage, a register magazine, a plurality of registers in said magazine, said registers being removable from said magazine into, active position, register selecting means controlled by said carriage for indexing said magazine to select a predetermined register in accordance with the position of said carriage, means controlled by said keys for moving said registers t8 and from said magazine, and

means controlled by said keys and operated after said selected register is removed from said magazine and is in active position for causing engagement of said clutch.

11. A calculating machine having differential actuator mechanism, a plurality of registers carried by a movable register support, register selecting mechanism controlling movement of the register support to positions to select individual registers carried by said register support for cooperation with said differential actuator mechanism for performing calculating operations, a columnar-printing control means controlling said register selecting mechanism and movable to'a plurality of register selecting positions. said columnar-printing control means being movable independently of said register support whereby it may move through a plurality of register selecting positions in less time than the register support moves through the like number of register selecting positions, said register selecting mechanism having a means which is controlled by both the columnar-printing control means and the register support and which, when the columnar-printing control means moves through successive register selecting positions more rapidly than the register support moves through succes'sive register selecting positions. is conditioned in accordance with the number oi register selecting positions through which the columnar-printpositions through which the register support moves, said means continuing to operate after the columnan-printing control means has stopped moving to cause the register support to continue to move until it has moved through as many register selecting positions as the columnar printing control means.

12. A calculating machine having a columnarprinting control means, amount difierential actuator mechanism, a register support, a plurality of registers carried by said register support, said register support being movable to select individual registers carried by said register support for cooperation with said differential actuator mechanism for performing calculating operations, a means movable away from a normal position to cause release of said register support for movement end also movabl bash to said normal po sition to cause arrest oi the register support,

' means controlled by the columnar-printing conetrol means and controlling the movements of said movable means away from normal position the columnsnprinting control means moves from columnar position to columnar position, and means controlled by the register support as the latter moves and controlling the movementsoi said movable means toward its normal position.

13. A calculating machine having a traveling paper carriage, amount difi'erentlal actuator mechanism, a register support, a plurality oi registers carried by; said register support, sold register support being movable to select indivicl= ual registers carried by said register support for cooperation with sold diilerentiai actuator mechanism ior performing calculating operas tions, a means movable away from and back to a normal position, means controlled by the paper carriage and determining the movements of said movable means away from normal position as the paper carriage tabulates, means controlled by the register support as the latter moves and determining the movements of said movable means toward its normal position, and means controlled by said movable means to release said register support for movement when said movable means is out of normal position and to orrest the register support while said movable means is in its normal position.

14. A calculating machine having a travel= ing paper carriage,.amount differential achietor mechanism, a register support, a plurality of registers carried by said register support, said register support being movable to select individual registers carried by said register support.

for cooperation with said diilerential actuator mechanism for performing calculating operations, an escapement mechanism controlling the register selecting movements of said register support, said escapement mechanism including two movably mounted elements, namely a ratchet member and anescapement pawl, means controlled by the traveling paper carriage and acting on one 01 said elements toadvance both elements, means controlled by the register support to operate the other of said elements to cause it to return toward its initial position in response to register selecting movement of the register support, and means controlled by the latter element to arrest the register support while said letter element is in its initial position and release said register support for register selecting movement while saidlatter element is out of its initial position.

15. A calculating machine having a columnarprinting control means, amount difierential actuator mechanism, a register support. a. pluoneness rality oi registers carried by said register support, said register support being movable to select individual registers carried by said register support for cooperation with said differentialactuator mechanism for performing calcu-= lating operations, a means movable away from and back to a normal position, control means controlled by the columnar-printing control means and controlling the movements oi said movable means away from normal position as the columnar-printing control means moves from columnar position to columnar position, means for moving said columnar-printing-control means through a plurality of columnar positions in a continuous movement, means controlled by the register support as the latter moves and com trolling the movements of said movable means toward its normal position, and means controlled by said movable means to release said register support for movement when said movable means is out oi position and to arrest the ree= ister support while said movable means is in its normal position.

it. A calculating machine having a traveling paper carriage, amount differential actuator mechanism, a register support, a plurality of registers carried by said register support, said register support being movable to select lndi= vidual registers carried by said register support for cooperation with said differential actuator movable means away from normal position as the paper carriage tabulates through each posi,

tion for which a control element is provided, means ior moving said carriage through a p1u= rality of its control positions in a continuous movement, means controlled by the register sup-: port as the latter moves and controlling the movements of said movable means toward its normal position, and means controlled by said movable means to release said reglster'support for movement when said movable means is out of normal position and to arrest the register support while said movable means is in its normal position.

17. A calculating machine having a traveling paper carriage, a register support, a plurality of registers on said support, a detent for said support, a ratchet, means carried by said carriage ior rotating said ratchet, a pawl holding said ratchet against return rotation, a second ratchet rotating with the first ratchet, a second pawl moved away from a normal position by the second ratchet as it rotates, means con trolled by the register support to operate said second pawl to release it for movement in the return direction relatively to said ratchets and under control of said last named means, and means controlled by said second pawl for operating said detent to release the register support as said second pawl moves out 01' normal position and to arrest theregiste'r support as said second pawl returns to normal position.

18. A calculating machine having a traveling paper carriage. a number of registers on a register supp rt movable to a corresponding number of register selecting positions from a first register selecting position to alast register selecting position,- register selecting means settable by said carriage as the latter moves from column to column to select predetermined registers in accordance with the positions to which said carriage moves, said register selecting means being set into operation to initiate movement or said register support as the carriage movesand continuing to operate after the carriage stops to complete the movement of the register support in accordance with the register selected, and means ior preventing further setting of said register selecting means by the traveling paper carriage when the register support reaches its last register selecting position.

19. In a calculating machine, columnar-printing-control means, a movable register supports, plurality of registers on said support, and register selecting means comprising an.- escapement movement thereof to restore said restraining 1o portionsto restraining condition. v

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